Flags fly at grave markers in Massachusetts National Cemetery in Bourne, Mass., on May 24, 2014. / Michael Dwyer, AP

by Tom Vanden Brook, USA TODAY

by Tom Vanden Brook, USA TODAY

Honoring veterans on Memorial Day and caring for them - or failing to - will be major themes of Sunday's news programs.

An investigation is underway at the Department of Veterans Affairs to determine whether officials there faked data and covered up waiting times for veterans seeking care. The scandal has led to calls for the resignation of VA Secretary Eric Shinseki. Thus far, President Obama has stood by Shinseki but has called for accountability at the department.

Here's the Sunday show lineup:

â?¢ CBS' Face the Nation. Bob Schieffer plans to host Sen. Richard Blumenthal, D-Conn., and Rep. Adam Kinzinger, R-Ill., a veteran of the wars in Afghanistan and Iraq. Blumenthal has said the FBI should take part in the investigation of the VA. USA TODAY'S own Jarrett Bell will also join Schieffer to discuss the lawsuit brought by former players alleging the league put their health at risk by illegally supplying them with drugs to mask injuries.

â?¢ This Week on ABC features Army Gen. Martin Dempsey, chairman of the Joint Chiefs of Staff and the military's highest-ranking officer. Also: Paul Rieckhoff, founder and CEO of Iraq and Afghanistan Veterans of America, is scheduled to discuss the VA scandal.

â?¢ Fox News Sunday will focus on the VA, too, interviewing Derek Bennett, chief of staff of Iraq and Afghanistan Veterans of America, and Margaret Moxness, a physician and VA hospital whistle-blower. From Kiev, Sen. Kelly Ayotte, R-N.H., will speak with Chris Wallace about the crisis in Ukraine ahead of presidential elections scheduled there.

â?¢ CNN's State of the Union will have a Candy Crowley interview with Army veteran Wes Moore, who calls Memorial Day the "loneliest holiday" for veterans.

â?¢ NBC's Meet the Press has a program devoted to the military on its schedule.